austere

From Longman Dictionary of Contemporary Englishaustereaus‧tere /ɔːˈstɪə, ɒ- $ ɒːˈstɪr/ ●○○ adjective1SIMPLE/PLAINplain and simple and without any decorationthe church’s austere simplicity2STRICTsomeone who is austere is very strict and serious – used to show disapprovalHer father is a very austere man.3STRICTan austere way of life is very simple and has few things to make it comfortable or enjoyableCuthbert led an austere life of prayer and solitude. —austerely adverb